moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 575 insertions, 0 deletions

diff --git a/libcaja-private/caja-desktop-link-monitor.c b/libcaja-private/caja-desktop-link-monitor.c
new file mode 100644
index 00000000..a88a32ea
--- /dev/null
+++ b/libcaja-private/caja-desktop-link-monitor.c
@@ -0,0 +1,575 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
+
+   caja-desktop-link-monitor.c: singleton thatn manages the links
+
+   Copyright (C) 2003 Red Hat, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public
+   License along with this program; if not, write to the
+   Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Author: Alexander Larsson <[email protected]>
+*/
+
+#include <config.h>
+#include "caja-desktop-link-monitor.h"
+#include "caja-desktop-link.h"
+#include "caja-desktop-icon-file.h"
+#include "caja-directory.h"
+#include "caja-desktop-directory.h"
+#include "caja-global-preferences.h"
+
+#include <eel/eel-debug.h>
+#include <eel/eel-gtk-macros.h>
+#include <eel/eel-glib-extensions.h>
+#include <eel/eel-vfs-extensions.h>
+#include <eel/eel-stock-dialogs.h>
+#include <gtk/gtk.h>
+#include <glib/gi18n.h>
+#include <gio/gio.h>
+#include <libcaja-private/caja-trash-monitor.h>
+#include <string.h>
+
+struct CajaDesktopLinkMonitorDetails
+{
+    GVolumeMonitor *volume_monitor;
+    CajaDirectory *desktop_dir;
+
+    CajaDesktopLink *home_link;
+    CajaDesktopLink *computer_link;
+    CajaDesktopLink *trash_link;
+    CajaDesktopLink *network_link;
+
+    gulong mount_id;
+    gulong unmount_id;
+    gulong changed_id;
+
+    GList *mount_links;
+};
+
+
+static void caja_desktop_link_monitor_init       (gpointer              object,
+        gpointer              klass);
+static void caja_desktop_link_monitor_class_init (gpointer              klass);
+
+EEL_CLASS_BOILERPLATE (CajaDesktopLinkMonitor,
+                       caja_desktop_link_monitor,
+                       G_TYPE_OBJECT)
+
+static CajaDesktopLinkMonitor *the_link_monitor = NULL;
+
+static void
+destroy_desktop_link_monitor (void)
+{
+    if (the_link_monitor != NULL)
+    {
+        g_object_unref (the_link_monitor);
+    }
+}
+
+CajaDesktopLinkMonitor *
+caja_desktop_link_monitor_get (void)
+{
+    if (the_link_monitor == NULL)
+    {
+        g_object_new (CAJA_TYPE_DESKTOP_LINK_MONITOR, NULL);
+        eel_debug_call_at_shutdown (destroy_desktop_link_monitor);
+    }
+    return the_link_monitor;
+}
+
+static void
+volume_delete_dialog (GtkWidget *parent_view,
+                      CajaDesktopLink *link)
+{
+    GMount *mount;
+    char *dialog_str;
+    char *display_name;
+
+    mount = caja_desktop_link_get_mount (link);
+
+    if (mount != NULL)
+    {
+        display_name = caja_desktop_link_get_display_name (link);
+        dialog_str = g_strdup_printf (_("You cannot move the volume \"%s\" to the trash."),
+                                      display_name);
+        g_free (display_name);
+
+        if (g_mount_can_eject (mount))
+        {
+            eel_run_simple_dialog
+            (parent_view,
+             FALSE,
+             GTK_MESSAGE_ERROR,
+             dialog_str,
+             _("If you want to eject the volume, please use \"Eject\" in the "
+               "popup menu of the volume."),
+             GTK_STOCK_OK, NULL);
+        }
+        else
+        {
+            eel_run_simple_dialog
+            (parent_view,
+             FALSE,
+             GTK_MESSAGE_ERROR,
+             dialog_str,
+             _("If you want to unmount the volume, please use \"Unmount Volume\" in the "
+               "popup menu of the volume."),
+             GTK_STOCK_OK, NULL);
+        }
+
+        g_object_unref (mount);
+        g_free (dialog_str);
+    }
+}
+
+void
+caja_desktop_link_monitor_delete_link (CajaDesktopLinkMonitor *monitor,
+                                       CajaDesktopLink *link,
+                                       GtkWidget *parent_view)
+{
+    switch (caja_desktop_link_get_link_type (link))
+    {
+    case CAJA_DESKTOP_LINK_HOME:
+    case CAJA_DESKTOP_LINK_COMPUTER:
+    case CAJA_DESKTOP_LINK_TRASH:
+    case CAJA_DESKTOP_LINK_NETWORK:
+        /* just ignore. We don't allow you to delete these */
+        break;
+    default:
+        volume_delete_dialog (parent_view, link);
+        break;
+    }
+}
+
+static gboolean
+volume_file_name_used (CajaDesktopLinkMonitor *monitor,
+                       const char *name)
+{
+    GList *l;
+    char *other_name;
+    gboolean same;
+
+    for (l = monitor->details->mount_links; l != NULL; l = l->next)
+    {
+        other_name = caja_desktop_link_get_file_name (l->data);
+        same = strcmp (name, other_name) == 0;
+        g_free (other_name);
+
+        if (same)
+        {
+            return TRUE;
+        }
+    }
+
+    return FALSE;
+}
+
+char *
+caja_desktop_link_monitor_make_filename_unique (CajaDesktopLinkMonitor *monitor,
+        const char *filename)
+{
+    char *unique_name;
+    int i;
+
+    i = 2;
+    unique_name = g_strdup (filename);
+    while (volume_file_name_used (monitor, unique_name))
+    {
+        g_free (unique_name);
+        unique_name = g_strdup_printf ("%s.%d", filename, i++);
+    }
+    return unique_name;
+}
+
+static gboolean
+has_mount (CajaDesktopLinkMonitor *monitor,
+           GMount                     *mount)
+{
+    gboolean ret;
+    GMount *other_mount;
+    GList *l;
+
+    ret = FALSE;
+
+    for (l = monitor->details->mount_links; l != NULL; l = l->next)
+    {
+        other_mount = caja_desktop_link_get_mount (l->data);
+        if (mount == other_mount)
+        {
+            g_object_unref (other_mount);
+            ret = TRUE;
+            break;
+        }
+        g_object_unref (other_mount);
+    }
+
+    return ret;
+}
+
+static void
+create_mount_link (CajaDesktopLinkMonitor *monitor,
+                   GMount *mount)
+{
+    CajaDesktopLink *link;
+
+    if (has_mount (monitor, mount))
+        return;
+
+    if ((!g_mount_is_shadowed (mount)) &&
+            eel_preferences_get_boolean (CAJA_PREFERENCES_DESKTOP_VOLUMES_VISIBLE))
+    {
+        link = caja_desktop_link_new_from_mount (mount);
+        monitor->details->mount_links = g_list_prepend (monitor->details->mount_links, link);
+    }
+}
+
+static void
+remove_mount_link (CajaDesktopLinkMonitor *monitor,
+                   GMount *mount)
+{
+    GList *l;
+    CajaDesktopLink *link;
+    GMount *other_mount;
+
+    link = NULL;
+    for (l = monitor->details->mount_links; l != NULL; l = l->next)
+    {
+        other_mount = caja_desktop_link_get_mount (l->data);
+        if (mount == other_mount)
+        {
+            g_object_unref (other_mount);
+            link = l->data;
+            break;
+        }
+        g_object_unref (other_mount);
+    }
+
+    if (link)
+    {
+        monitor->details->mount_links = g_list_remove (monitor->details->mount_links, link);
+        g_object_unref (link);
+    }
+}
+
+
+
+static void
+mount_added_callback (GVolumeMonitor *volume_monitor,
+                      GMount *mount,
+                      CajaDesktopLinkMonitor *monitor)
+{
+    create_mount_link (monitor, mount);
+}
+
+
+static void
+mount_removed_callback (GVolumeMonitor *volume_monitor,
+                        GMount *mount,
+                        CajaDesktopLinkMonitor *monitor)
+{
+    remove_mount_link (monitor, mount);
+}
+
+static void
+mount_changed_callback (GVolumeMonitor *volume_monitor,
+                        GMount *mount,
+                        CajaDesktopLinkMonitor *monitor)
+{
+    /* TODO: update the mount with other details */
+
+    /* remove a mount if it goes into the shadows */
+    if (g_mount_is_shadowed (mount) && has_mount (monitor, mount))
+    {
+        remove_mount_link (monitor, mount);
+    }
+}
+
+static void
+update_link_visibility (CajaDesktopLinkMonitor *monitor,
+                        CajaDesktopLink       **link_ref,
+                        CajaDesktopLinkType     link_type,
+                        const char                 *preference_key)
+{
+    if (eel_preferences_get_boolean (preference_key))
+    {
+        if (*link_ref == NULL)
+        {
+            *link_ref = caja_desktop_link_new (link_type);
+        }
+    }
+    else
+    {
+        if (*link_ref != NULL)
+        {
+            g_object_unref (*link_ref);
+            *link_ref = NULL;
+        }
+    }
+}
+
+static void
+desktop_home_visible_changed (gpointer callback_data)
+{
+    CajaDesktopLinkMonitor *monitor;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (callback_data);
+
+    update_link_visibility (CAJA_DESKTOP_LINK_MONITOR (monitor),
+                            &monitor->details->home_link,
+                            CAJA_DESKTOP_LINK_HOME,
+                            CAJA_PREFERENCES_DESKTOP_HOME_VISIBLE);
+}
+
+static void
+desktop_computer_visible_changed (gpointer callback_data)
+{
+    CajaDesktopLinkMonitor *monitor;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (callback_data);
+
+    update_link_visibility (CAJA_DESKTOP_LINK_MONITOR (callback_data),
+                            &monitor->details->computer_link,
+                            CAJA_DESKTOP_LINK_COMPUTER,
+                            CAJA_PREFERENCES_DESKTOP_COMPUTER_VISIBLE);
+}
+
+static void
+desktop_trash_visible_changed (gpointer callback_data)
+{
+    CajaDesktopLinkMonitor *monitor;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (callback_data);
+
+    update_link_visibility (CAJA_DESKTOP_LINK_MONITOR (callback_data),
+                            &monitor->details->trash_link,
+                            CAJA_DESKTOP_LINK_TRASH,
+                            CAJA_PREFERENCES_DESKTOP_TRASH_VISIBLE);
+}
+
+static void
+desktop_network_visible_changed (gpointer callback_data)
+{
+    CajaDesktopLinkMonitor *monitor;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (callback_data);
+
+    update_link_visibility (CAJA_DESKTOP_LINK_MONITOR (callback_data),
+                            &monitor->details->network_link,
+                            CAJA_DESKTOP_LINK_NETWORK,
+                            CAJA_PREFERENCES_DESKTOP_NETWORK_VISIBLE);
+}
+
+static void
+desktop_volumes_visible_changed (gpointer callback_data)
+{
+    CajaDesktopLinkMonitor *monitor;
+    GList *l, *mounts;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (callback_data);
+
+    if (eel_preferences_get_boolean (CAJA_PREFERENCES_DESKTOP_VOLUMES_VISIBLE))
+    {
+        if (monitor->details->mount_links == NULL)
+        {
+            mounts = g_volume_monitor_get_mounts (monitor->details->volume_monitor);
+            for (l = mounts; l != NULL; l = l->next)
+            {
+                create_mount_link (monitor, l->data);
+                g_object_unref (l->data);
+            }
+            g_list_free (mounts);
+        }
+    }
+    else
+    {
+        g_list_foreach (monitor->details->mount_links, (GFunc)g_object_unref, NULL);
+        g_list_free (monitor->details->mount_links);
+        monitor->details->mount_links = NULL;
+    }
+}
+
+static void
+create_link_and_add_preference (CajaDesktopLink   **link_ref,
+                                CajaDesktopLinkType link_type,
+                                const char             *preference_key,
+                                EelPreferencesCallback  callback,
+                                gpointer                callback_data)
+{
+    if (eel_preferences_get_boolean (preference_key))
+    {
+        *link_ref = caja_desktop_link_new (link_type);
+    }
+
+    eel_preferences_add_callback (preference_key, callback, callback_data);
+}
+
+static void
+caja_desktop_link_monitor_init (gpointer object, gpointer klass)
+{
+    CajaDesktopLinkMonitor *monitor;
+    GList *l, *mounts;
+    GMount *mount;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (object);
+
+    the_link_monitor = monitor;
+
+    monitor->details = g_new0 (CajaDesktopLinkMonitorDetails, 1);
+
+    monitor->details->volume_monitor = g_volume_monitor_get ();
+
+    /* We keep around a ref to the desktop dir */
+    monitor->details->desktop_dir = caja_directory_get_by_uri (EEL_DESKTOP_URI);
+
+    /* Default links */
+
+    create_link_and_add_preference (&monitor->details->home_link,
+                                    CAJA_DESKTOP_LINK_HOME,
+                                    CAJA_PREFERENCES_DESKTOP_HOME_VISIBLE,
+                                    desktop_home_visible_changed,
+                                    monitor);
+
+    create_link_and_add_preference (&monitor->details->computer_link,
+                                    CAJA_DESKTOP_LINK_COMPUTER,
+                                    CAJA_PREFERENCES_DESKTOP_COMPUTER_VISIBLE,
+                                    desktop_computer_visible_changed,
+                                    monitor);
+
+    create_link_and_add_preference (&monitor->details->trash_link,
+                                    CAJA_DESKTOP_LINK_TRASH,
+                                    CAJA_PREFERENCES_DESKTOP_TRASH_VISIBLE,
+                                    desktop_trash_visible_changed,
+                                    monitor);
+
+    create_link_and_add_preference (&monitor->details->network_link,
+                                    CAJA_DESKTOP_LINK_NETWORK,
+                                    CAJA_PREFERENCES_DESKTOP_NETWORK_VISIBLE,
+                                    desktop_network_visible_changed,
+                                    monitor);
+
+    /* Mount links */
+
+    mounts = g_volume_monitor_get_mounts (monitor->details->volume_monitor);
+    for (l = mounts; l != NULL; l = l->next)
+    {
+        mount = l->data;
+        create_mount_link (monitor, mount);
+        g_object_unref (mount);
+    }
+    g_list_free (mounts);
+
+    eel_preferences_add_callback (CAJA_PREFERENCES_DESKTOP_VOLUMES_VISIBLE,
+                                  desktop_volumes_visible_changed,
+                                  monitor);
+
+    monitor->details->mount_id =
+        g_signal_connect_object (monitor->details->volume_monitor, "mount_added",
+                                 G_CALLBACK (mount_added_callback), monitor, 0);
+    monitor->details->unmount_id =
+        g_signal_connect_object (monitor->details->volume_monitor, "mount_removed",
+                                 G_CALLBACK (mount_removed_callback), monitor, 0);
+    monitor->details->changed_id =
+        g_signal_connect_object (monitor->details->volume_monitor, "mount_changed",
+                                 G_CALLBACK (mount_changed_callback), monitor, 0);
+
+}
+
+static void
+remove_link_and_preference (CajaDesktopLink   **link_ref,
+                            const char             *preference_key,
+                            EelPreferencesCallback  callback,
+                            gpointer                callback_data)
+{
+    if (*link_ref != NULL)
+    {
+        g_object_unref (*link_ref);
+        *link_ref = NULL;
+    }
+
+    eel_preferences_remove_callback (preference_key, callback, callback_data);
+}
+
+static void
+desktop_link_monitor_finalize (GObject *object)
+{
+    CajaDesktopLinkMonitor *monitor;
+
+    monitor = CAJA_DESKTOP_LINK_MONITOR (object);
+
+    g_object_unref (monitor->details->volume_monitor);
+
+    /* Default links */
+
+    remove_link_and_preference (&monitor->details->home_link,
+                                CAJA_PREFERENCES_DESKTOP_HOME_VISIBLE,
+                                desktop_home_visible_changed,
+                                monitor);
+
+    remove_link_and_preference (&monitor->details->computer_link,
+                                CAJA_PREFERENCES_DESKTOP_COMPUTER_VISIBLE,
+                                desktop_computer_visible_changed,
+                                monitor);
+
+    remove_link_and_preference (&monitor->details->trash_link,
+                                CAJA_PREFERENCES_DESKTOP_TRASH_VISIBLE,
+                                desktop_trash_visible_changed,
+                                monitor);
+
+    remove_link_and_preference (&monitor->details->network_link,
+                                CAJA_PREFERENCES_DESKTOP_NETWORK_VISIBLE,
+                                desktop_network_visible_changed,
+                                monitor);
+
+    /* Mounts */
+
+    g_list_foreach (monitor->details->mount_links, (GFunc)g_object_unref, NULL);
+    g_list_free (monitor->details->mount_links);
+    monitor->details->mount_links = NULL;
+
+    caja_directory_unref (monitor->details->desktop_dir);
+    monitor->details->desktop_dir = NULL;
+
+    eel_preferences_remove_callback (CAJA_PREFERENCES_DESKTOP_VOLUMES_VISIBLE,
+                                     desktop_volumes_visible_changed,
+                                     monitor);
+
+    if (monitor->details->mount_id != 0)
+    {
+        g_source_remove (monitor->details->mount_id);
+    }
+    if (monitor->details->unmount_id != 0)
+    {
+        g_source_remove (monitor->details->unmount_id);
+    }
+    if (monitor->details->changed_id != 0)
+    {
+        g_source_remove (monitor->details->changed_id);
+    }
+
+    g_free (monitor->details);
+
+    EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
+}
+
+static void
+caja_desktop_link_monitor_class_init (gpointer klass)
+{
+    GObjectClass *object_class;
+
+    object_class = G_OBJECT_CLASS (klass);
+
+    object_class->finalize = desktop_link_monitor_finalize;
+
+}